149257708521 has 16 divisors (see below), whose sum is σ = 205838438400. Its totient is φ = 96103823760.

The previous prime is 149257708507. The next prime is 149257708559. The reversal of 149257708521 is 125807752941.

It is a happy number.

149257708521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 149257708521 - 2⁵ = 149257708489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149257708421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1548571 + ... + 1642128.

It is an arithmetic number, because the mean of its divisors is an integer number (12864902400).

Almost surely, 2^149257708521 is an apocalyptic number.

It is an amenable number.

149257708521 is a deficient number, since it is larger than the sum of its proper divisors (56580729879).

149257708521 is a wasteful number, since it uses less digits than its factorization.

149257708521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3191236.

The product of its (nonzero) digits is 1411200, while the sum is 51.

The spelling of 149257708521 in words is "one hundred forty-nine billion, two hundred fifty-seven million, seven hundred eight thousand, five hundred twenty-one".